64372523045 has 4 divisors (see below), whose sum is σ = 77247027660. Its totient is φ = 51498018432.

The previous prime is 64372523023. The next prime is 64372523053. The reversal of 64372523045 is 54032527346.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17806767364 + 46565755681 = 133442^2 + 215791^2 .

It is a cyclic number.

It is not a de Polignac number, because 64372523045 - 2⁸ = 64372522789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64372522993 and 64372523011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6437252300 + ... + 6437252309.

It is an arithmetic number, because the mean of its divisors is an integer number (19311756915).

Almost surely, 2^64372523045 is an apocalyptic number.

It is an amenable number.

64372523045 is a deficient number, since it is larger than the sum of its proper divisors (12874504615).

64372523045 is a wasteful number, since it uses less digits than its factorization.

64372523045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12874504614.

The product of its (nonzero) digits is 604800, while the sum is 41.

The spelling of 64372523045 in words is "sixty-four billion, three hundred seventy-two million, five hundred twenty-three thousand, forty-five".